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upd7810: update prev commit: still affect HC flag

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hap 2022-09-17 10:51:49 +02:00
parent e43bc4bc3e
commit f48ca00945
1 changed files with 61 additions and 34 deletions
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95
src/devices/cpu/upd7810/upd7810_opcodes.cpp
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@ -8126,13 +8126,16 @@ void upd7810_device::MOV_L_A()
void upd7810_device::INRW_wa()
{
PAIR ea = m_va;
RDOPARG( ea.b.l );
uint8_t m = RM( ea.d ) + 1;
WM( ea.d, m );
uint8_t tmp, m;
uint8_t old_cy = PSW & CY;
if (m == 0)
PSW |= SK;
SET_Z(m);
RDOPARG( ea.b.l );
m = RM( ea.d );
tmp = m + 1;
ZHC_ADD( tmp, m, 0 );
WM( ea.d, tmp );
SKIP_CY;
PSW = ( PSW & ~CY ) | old_cy;
}
/* 21: 0010 0001 */
@ -8231,13 +8234,16 @@ void upd7810_device::LDAX_Hm()
void upd7810_device::DCRW_wa()
{
PAIR ea = m_va;
RDOPARG( ea.b.l );
uint8_t m = RM( ea.d ) - 1;
WM( ea.d, m );
uint8_t tmp, m;
uint8_t old_cy = PSW & CY;
if (m == 0xff)
PSW |= SK;
SET_Z(m);
RDOPARG( ea.b.l );
m = RM( ea.d );
tmp = m - 1;
ZHC_SUB( tmp, m, 0 );
WM( ea.d, tmp );
SKIP_CY;
PSW = ( PSW & ~CY ) | old_cy;
}
/* 31: 0011 0001 */
@ -8366,25 +8372,34 @@ void upd7810_device::CALL_w()
/* 41: 0100 0001 */
void upd7810_device::INR_A()
{
if (++A == 0)
PSW |= SK;
SET_Z(A);
uint8_t old_cy = PSW & CY;
uint8_t tmp = A + 1;
ZHC_ADD( tmp, A, 0 );
A = tmp;
SKIP_CY;
PSW = ( PSW & ~CY ) | old_cy;
}
/* 42: 0100 0010 */
void upd7810_device::INR_B()
{
if (++B == 0)
PSW |= SK;
SET_Z(B);
uint8_t old_cy = PSW & CY;
uint8_t tmp = B + 1;
ZHC_ADD( tmp, B, 0 );
B = tmp;
SKIP_CY;
PSW = ( PSW & ~CY ) | old_cy;
}
/* 43: 0100 0011 */
void upd7810_device::INR_C()
{
if (++C == 0)
PSW |= SK;
SET_Z(C);
uint8_t old_cy = PSW & CY;
uint8_t tmp = C + 1;
ZHC_ADD( tmp, C, 0 );
C = tmp;
SKIP_CY;
PSW = ( PSW & ~CY ) | old_cy;
}
/* 44: 0100 0100 llll llll hhhh hhhh */
@ -8485,25 +8500,34 @@ void upd7810_device::EXH()
/* 51: 0101 0001 */
void upd7810_device::DCR_A()
{
if (--A == 0xff)
PSW |= SK;
SET_Z(A);
uint8_t old_cy = PSW & CY;
uint8_t tmp = A - 1;
ZHC_SUB( tmp, A, 0 );
A = tmp;
SKIP_CY;
PSW = ( PSW & ~CY ) | old_cy;
}
/* 52: 0101 0010 */
void upd7810_device::DCR_B()
{
if (--B == 0xff)
PSW |= SK;
SET_Z(B);
uint8_t old_cy = PSW & CY;
uint8_t tmp = B - 1;
ZHC_SUB( tmp, B, 0 );
B = tmp;
SKIP_CY;
PSW = ( PSW & ~CY ) | old_cy;
}
/* 53: 0101 0011 */
void upd7810_device::DCR_C()
{
if (--C == 0xff)
PSW |= SK;
SET_Z(C);
uint8_t old_cy = PSW & CY;
uint8_t tmp = C - 1;
ZHC_SUB( tmp, C, 0 );
C = tmp;
SKIP_CY;
PSW = ( PSW & ~CY ) | old_cy;
}
/* 54: 0101 0100 llll llll hhhh hhhh */
@ -8843,7 +8867,10 @@ void upd7810_device::PRE_60()
/* 61: 0110 0001 */
void upd7810_device::DAA()
{
uint8_t l = A & 0x0f, h = A >> 4, tmp, adj = 0x00, old_cy = PSW & CY;
uint8_t l = A & 0x0f;
uint8_t h = A >> 4;
uint8_t adj = 0x00;
uint8_t old_cy = PSW & CY;
if (0 == (PSW & HC))
{
@ -8860,15 +8887,15 @@ void upd7810_device::DAA()
adj = 0x66;
}
}
else
if (l < 3)
else if (l < 3)
{
if (h < 10 && 0 == (PSW & CY))
adj = 0x06;
else
adj = 0x66;
}
tmp = A + adj;
uint8_t tmp = A + adj;
ZHC_ADD( tmp, A, PSW & CY );
PSW |= old_cy;
A = tmp;